Over the past several years I've become a fan of SP products. They tend to offer really good performance for the price. Reliability has never been a problem with over 10 different SP products I've purchased over the years. This card really surprised me - in a GOOD way. Using a cheap Kingston UHS-II card reader plugged into my USB3 port on my laptop I verified 150MB/sec write and 160MB/sec read speeds. Although the card does not have the additional UHS-II pins it shows that the performance limits are sometimes due to hardware, like the card reader, or the USB port. I've attached the ATTO graph showing the write/read performance. The card is only a couple of dollars more than the A1 card but the IOPS are much better. I've included the ASSD IOPS from a recently purchased SP 512GB micro SDXC U3 A1 card so you can see that the A2 does offer significantly more IOPS at a very very slight increase in cost.
Actual capacity is 991.9GB decimal or 923GB binary. Close enough.
I do wish storage manufacturers would advertise the binary capacity of their drives instead of the decimal value. Most negative reviews of drives complain about the capacity being less than advertised and that is why. It is actually as stated almost all the time except people aren't aware of how it is arrived at. It IS a bigger number and that's why they do it.
I am super impressed with this card and based on my history with SP products, look forward to a long life with this card. If things change, I will update this review. The 5 Yr. warranty is just frosting on the cake. I don't know how SP's service is as I've never needed to use so we'll see. In the meanwhile I highly recommend this card. It is fabulous value compared to the competition and the performance is stellar!!!
***Update***
Although this card is capable of much higher read and write rates than specified, the card will overheat and freeze if you write to it using a UHS-II card reader. This enables much higher write speeds of about 150MB/sec. After re-formatting it and using a conventional USB3 card reader it resumed working fine but at about 30MB/sec (still faster than spec......). At this speed the card just got comfortably warm - not hot.
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This Item  Silicon Power 1TB Superior Micro SDXC UHS-I (U3), V30 4K A2,High Speed MicroSD Card, Compatible with Nintendo-Switch, Steam Deck |  |  |  |  |  | |
| Price | -27% $65.99 List: $89.99 | -14% $119.98 List: $139.98 | $144.99 | $95.43 | $99.99 | $92.60 |
| Delivery | Get it as soon as Saturday, May 18 | Get it as soon as Saturday, May 18 | Get it as soon as Saturday, May 18 | Get it as soon as Saturday, May 18 | Get it as soon as Saturday, May 18 | — |
| Customer Ratings | ||||||
| Easy to install | ||||||
| Storage Capacity | ||||||
| Value for money | ||||||
| Durability | ||||||
| Sold By | Silicon Power USA Inc | Gigastone America | TEAMGROUP Inc. | Direct Suppliers US | Store4Memory | Amazon.com |
| flash memory type | Micro SDXC | Micro SDXC | Micro SDXC | Micro SDXC, Micro SD | Micro SDXC | Micro SDXC |
| memory capacity | 1 TB | 1 TB | 256 GB | 1 TB | 1 TB | 1 TB |
| speed class | class 10 | class 10 | class 10 | — | class 10 | class 10 |
| write speed | 80 MBps | 90 MB per second | — | 90 MB per second | — | 130 MB per second |
| read speed | — | 150 megabytes per second | 160 megabytes per second | 160 megabytes per second | 100 megabytes per second | 190 megabytes per second |
Reviews with images
Ridiculously fast for a low priced 1TB card. Excellent value.
Over the past several years I've become a fan of SP products. They tend to offer really good performance for the price. Reliability has never been a problem with over 10 different SP products I've purchased over the years. This card really surprised me - in a GOOD way. Using a cheap Kingston UHS-II card reader plugged into my USB3 port on my laptop I verified 150MB/sec write and 160MB/sec read speeds. Although the card does not have the additional UHS-II pins it shows that the performance limits are sometimes due to hardware, like the card reader, or the USB port. I've attached the ATTO graph showing the write/read performance. The card is only a couple of dollars more than the A1 card but the IOPS are much better. I've included the ASSD IOPS from a recently purchased SP 512GB micro SDXC U3 A1 card so you can see that the A2 does offer significantly more IOPS at a very very slight increase in cost.Actual capacity is 991.9GB decimal or 923GB binary. Close enough.I do wish storage manufacturers would advertise the binary capacity of their drives instead of the decimal value. Most negative reviews of drives complain about the capacity being less than advertised and that is why. It is actually as stated almost all the time except people aren't aware of how it is arrived at. It IS a bigger number and that's why they do it.I am super impressed with this card and based on my history with SP products, look forward to a long life with this card. If things change, I will update this review. The 5 Yr. warranty is just frosting on the cake. I don't know how SP's service is as I've never needed to use so we'll see. In the meanwhile I highly recommend this card. It is fabulous value compared to the competition and the performance is stellar!!!***Update***Although this card is capable of much higher read and write rates than specified, the card will overheat and freeze if you write to it using a UHS-II card reader. This enables much higher write speeds of about 150MB/sec. After re-formatting it and using a conventional USB3 card reader it resumed working fine but at about 30MB/sec (still faster than spec......). At this speed the card just got comfortably warm - not hot.
Top reviews from the United States
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Reviewed in the United States on May 3, 2023
Actual capacity is 991.9GB decimal or 923GB binary. Close enough.
I do wish storage manufacturers would advertise the binary capacity of their drives instead of the decimal value. Most negative reviews of drives complain about the capacity being less than advertised and that is why. It is actually as stated almost all the time except people aren't aware of how it is arrived at. It IS a bigger number and that's why they do it.
I am super impressed with this card and based on my history with SP products, look forward to a long life with this card. If things change, I will update this review. The 5 Yr. warranty is just frosting on the cake. I don't know how SP's service is as I've never needed to use so we'll see. In the meanwhile I highly recommend this card. It is fabulous value compared to the competition and the performance is stellar!!!
***Update***
Although this card is capable of much higher read and write rates than specified, the card will overheat and freeze if you write to it using a UHS-II card reader. This enables much higher write speeds of about 150MB/sec. After re-formatting it and using a conventional USB3 card reader it resumed working fine but at about 30MB/sec (still faster than spec......). At this speed the card just got comfortably warm - not hot.
Ridiculously fast for a low priced 1TB card. Excellent value.
Reviewed in the United States on May 3, 2023
Over the past several years I've become a fan of SP products. They tend to offer really good performance for the price. Reliability has never been a problem with over 10 different SP products I've purchased over the years. This card really surprised me - in a GOOD way. Using a cheap Kingston UHS-II card reader plugged into my USB3 port on my laptop I verified 150MB/sec write and 160MB/sec read speeds. Although the card does not have the additional UHS-II pins it shows that the performance limits are sometimes due to hardware, like the card reader, or the USB port. I've attached the ATTO graph showing the write/read performance. The card is only a couple of dollars more than the A1 card but the IOPS are much better. I've included the ASSD IOPS from a recently purchased SP 512GB micro SDXC U3 A1 card so you can see that the A2 does offer significantly more IOPS at a very very slight increase in cost.Reviewed in the United States on May 3, 2023
Actual capacity is 991.9GB decimal or 923GB binary. Close enough.
I do wish storage manufacturers would advertise the binary capacity of their drives instead of the decimal value. Most negative reviews of drives complain about the capacity being less than advertised and that is why. It is actually as stated almost all the time except people aren't aware of how it is arrived at. It IS a bigger number and that's why they do it.
I am super impressed with this card and based on my history with SP products, look forward to a long life with this card. If things change, I will update this review. The 5 Yr. warranty is just frosting on the cake. I don't know how SP's service is as I've never needed to use so we'll see. In the meanwhile I highly recommend this card. It is fabulous value compared to the competition and the performance is stellar!!!
***Update***
Although this card is capable of much higher read and write rates than specified, the card will overheat and freeze if you write to it using a UHS-II card reader. This enables much higher write speeds of about 150MB/sec. After re-formatting it and using a conventional USB3 card reader it resumed working fine but at about 30MB/sec (still faster than spec......). At this speed the card just got comfortably warm - not hot.
Images in this review
Reviewed in the United States on May 22, 2023
Crystal Disk Mark, etc give good, but incomplete info which is why I use ATTO.
It allows the user to select the best storage device for their application.
I've been using the blue EVO Select 512 GB MicroSDXC A2 cards in my phones for video recording up to 8K, and Hi Res music storage but both need LOTS of storage.
Overall very good performance and good value.
This SP card is ~-5% writes above 64K I/O size & ~-10% reads 128K-64MB.
It also has slower IO rates, especially at higher IO sizes.
IO sizes are usually selected by the OS and/or hardware.
This card came formatted exFAT, 512KB clusters which is what my LG V50 & V60 format the card to after I formatted it to RAW. SD association standard as well. Phones are rooted as I despise Gargoyles skewed search results, invasion of privacy and fascist tactics (EUs words, not mine)
The only MicroSDXC card I have used that is faster than the SP and Evo Select is the Sandisk Extreme Pro which is only marginally so.
Give these cards a try. I believe you will be happy unless you are looking to record 8K @60 Hz or above.
Images are Samsung Evo Select 512GB, MB/s, IO/sec Silicon Power 1TB, MB/S, IO/sec
Last image shows what happens when a 256GB Evo Select card is formatted to 512KB cluster size.
128KB is correct. Use your phone or SD Formatter Windblows app to get the right size.
I was a communications, design and senior systems engineer for large scale computing systems for 25 years before retiring and understand storage systems and what the tests show.
These cards are "Assembled" in Taiwan where a friend is a SOC design engineer and says SP is a solid company. SP also acquired facilities in Bend, Oregon in 2019 for hi power semiconductor devices.
Pleasantly surprised. Good performance and value.
Reviewed in the United States on May 22, 2023
Flash memory designers choose what to optimize at the expense of other parameters, including cost.Reviewed in the United States on May 22, 2023
Crystal Disk Mark, etc give good, but incomplete info which is why I use ATTO.
It allows the user to select the best storage device for their application.
I've been using the blue EVO Select 512 GB MicroSDXC A2 cards in my phones for video recording up to 8K, and Hi Res music storage but both need LOTS of storage.
Overall very good performance and good value.
This SP card is ~-5% writes above 64K I/O size & ~-10% reads 128K-64MB.
It also has slower IO rates, especially at higher IO sizes.
IO sizes are usually selected by the OS and/or hardware.
This card came formatted exFAT, 512KB clusters which is what my LG V50 & V60 format the card to after I formatted it to RAW. SD association standard as well. Phones are rooted as I despise Gargoyles skewed search results, invasion of privacy and fascist tactics (EUs words, not mine)
The only MicroSDXC card I have used that is faster than the SP and Evo Select is the Sandisk Extreme Pro which is only marginally so.
Give these cards a try. I believe you will be happy unless you are looking to record 8K @60 Hz or above.
Images are Samsung Evo Select 512GB, MB/s, IO/sec Silicon Power 1TB, MB/S, IO/sec
Last image shows what happens when a 256GB Evo Select card is formatted to 512KB cluster size.
128KB is correct. Use your phone or SD Formatter Windblows app to get the right size.
I was a communications, design and senior systems engineer for large scale computing systems for 25 years before retiring and understand storage systems and what the tests show.
These cards are "Assembled" in Taiwan where a friend is a SOC design engineer and says SP is a solid company. SP also acquired facilities in Bend, Oregon in 2019 for hi power semiconductor devices.
Images in this review
Top reviews from other countries
Luissantiago
BUEN PRODUCTO A UN EXCELENTE PRECIO
Reviewed in Mexico on January 15, 2024
